-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/03/2010 10:01 PM, Max Vlasov wrote: > On Sun, Oct 3, 2010 at 7:21 PM, Roger Binns <rog...@rogerbinns.com> wrote: > >> >> Also note that xTruncate may be called to make a file longer. >> >> > Roger, are you sure about that?
That has certainly been stated in the past. Unfortunately the current io_methods documentation doesn't say anything about xTruncate. Looking through the source, the vast majority of cases would indeed result in a shorter file with writes used to extend. But there may be lengthening from walCheckpoint() and possibly as part of the backup process. In any event unless there is an explicit guarantee from the SQLite authors that xTruncate will never be called to lengthen a file (including in future versions) then it should be something that should be checked for and errored or implemented as appropriate. Roger -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkypa/EACgkQmOOfHg372QRugwCguKqqfXhf2+/jrwDYnYwid7CY mjkAn1JnTYIhlKey7YW6QumIWe4oLwJR =5hwL -----END PGP SIGNATURE----- _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
